Mutoh Randomly Printing Grainy

[CaliGraphics]

Mutoh 1624. Been having a sporadic problem with the large fields of color (solid or gradient) coming out with slightly different tones from panel to panel. Looking at it close you can see the print pattern very tight and clean on a panel
and the next will have a very grainy look to it causing the color to be off some from the previous panel. These are all printed back to back but there is a very obvious difference in the noise texture. It it humidity? Heat? It's literally 1 panel to the next so I don't think a whole lot can change in the environment. Nozzle check is perfect. Any ideas?

 

[floater302]

What rip are you using?

 

[CaliGraphics]

The PhotoPrint SE that comes with the Mutoh printers...

 

[CaliGraphics]

What rip are you using?

The PhotoPrint SE that comes with the Mutoh printers...

 

[Darion Judd]

Did you ever find the solution to this issue?

 

[nemesis2180]

hey CaliGraphics,

did you tried to change print patterns? It looks like you used different print patterns. That piece on the right side looks like Fog pattern, bottom piece might be Wave pattern.

Its kinda tricky. Did you using exact print profile that match your material? If you printing on different material with bad profile, you could see some imperfections in colors (patterns, dots, lines). Every material has different behavior, surface tension, material stretching under the heat, ink absorbtion... Open your job properties and look for print patterns (wave, fog, superfine, ...), head scans (2x, 4x) and ink drop size. This is 3 factors that makes prints very pretty or grainy and wavy. If you dont have right print profile, try experiment with generic profile with this settings : If you print on vinyl, try medium size of ink drop, Fine and Fuzz ink pattern and 2x head scan, which is normal quality mode.

I hope that i helped you...